Add tap_random_base64 and software timer info to Useful Functions doc (#4360)

* Update docs

* Add security caveat

Co-Authored-By: drashna <drashna@live.com>

* Wordsmithing

Co-Authored-By: drashna <drashna@live.com>

* Update docs/ref_functions.md

Co-Authored-By: drashna <drashna@live.com>

1 files changed, 0 insertions, 17 deletions

diff --git a/docs/faq_keymap.md b/docs/faq_keymap.md
index 4e842d363..ae01e9387 100644
--- a/docs/faq_keymap.md
+++ b/docs/faq_keymap.md
@@ -211,20 +211,3 @@ here real_mods lost state for 'physical left shift'.
 
 weak_mods is ORed with real_mods when keyboard report is sent.
 https://github.com/tmk/tmk_core/blob/master/common/action_util.c#L57
-
-## Timer Functionality
-
-It's possible to start timers and read values for time-specific events - here's an example:
-
-```c
-static uint16_t key_timer;
-key_timer = timer_read();
-
-if (timer_elapsed(key_timer) < 100) {
-  // do something if less than 100ms have passed
-} else {
-  // do something if 100ms or more have passed
-}
-```
-
-It's best to declare the `static uint16_t key_timer;` at the top of the file, outside of any code blocks you're using it in.